RT Journal Article SR Electronic T1 Lower oesophageal pH monitoring--a useful clinical tool. JF Archives of Disease in Childhood JO Arch Dis Child FD BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health SP 146 OP 148 DO 10.1136/adc.67.1.146 VO 67 IS 1 A1 D M Tappin A1 C King A1 J Y Paton YR 1992 UL http://adc.bmj.com/content/67/1/146.abstract AB